The new series continues, as George Clarke follows more fantastic, unlikely and amazing builds, shines a light on the builds he's always wanted to see, and visits stunning modern houses and ancient homes in Portugal. In this episode, George visits a life-changing family camper van built for a mum who has tetraplegia and her son who has cerebral palsy, to allow the whole family to get away on camping trips and to music festivals. George also returns to a previous Amazing Spacer to see his latest eccentric project - a deliciously clever and impressively engineered build, inspired by a cupcake! George visits Portugal's thinnest house, squeezed between two grand churches, supposedly built to keep apart the nuns from one church and the monks from the other. George also shines a light on three great eco builds, including a super-sustainable house created from more than 600 self-assembly wooden blocks, and a swanky riverside house built on stilts to protect itself from climate change.